Kinetics of the Thermal Decomposition of Magnesium Salicylate Powder in Air

Abstract

Abstract:

Simultaneous thermogravimetry-differential thermal analysis(TG-DTA) was used to study the kinetics and the degradation of magnesium salicylate(C₁₄H₁₀MgO₆) in air. The results show that the decomposition proceeds through two steps. The kinetics of the first decomposition step was studied. The activation energies were calculated by using the Friedman and Flynn Wall Ozawa(FWO) methods, and the most probable kinetic model function was estimated using the multiple linear regression method. The values of the correlated kinetic parameters for the first decomposition step are E=152.97 kJ/mol, lg(A/S^-1)=10.78, f(α)=(1-α)ⁿ(1+K_catα), n=0.691, and K_cat=1.3048.

Key words: Magnesium salicylate, TG-DTA, Thermal decomposition, Mechanism, Kinetics , Magnesium salicylate, TG-DTA, Thermal decomposition, Mechanism, Kinetics

DIAKITE Kahirou , HONG Jian-he , ZHAN Dan , ZHANG Ke-li . Kinetics of the Thermal Decomposition of Magnesium Salicylate Powder in Air[J]. Chemical Research in Chinese Universities, 2006, 22(5): 617-620.

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Kinetics of the Thermal Decomposition of Magnesium Salicylate Powder in Air

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